What is the reason why he came here?
This is the reason why I came here.
Tell me the reason why she got angry.
Likewise, if you are playing a chess computer, the reason why it moves knight to bishop 3 or whatever might be because that's the only move to guard against checkmate.
From peonies to chrysanthemums to dahlias, the reason why so many fireworks are named after flowering plants is because they burst out of a seed, or shell.
That must be the reason why all the people congratulate on their health care system providing more lives for them.
I have no doubt of the veracity of the story and the reason why it's so explosive.
To get away with stuff: This is the reason why most women lie as well, right?
It is not the best definition, because it obscures the reason why prices for most everything go up in the first place.
Combining the natural conditions in Chongqing and a lot of data collected in many years, it also analyses the reason why there is muck fog in this city.